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Old 02-01-2010, 11:54 AM   #1
Join Date: Feb 2010
Location: Indiana
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4 heat 2 cool thermostat

Have a Trane 2 stage heat pump and 2 stage natural gas furnace. Need a thermostat to fully take advantage of this set-up. Currently have a Vision Pro which only works for 3 heat and 2 cool. Do I need 4 heat 2 cool or will mine work?

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Old 02-01-2010, 07:04 PM   #2
An old Tradesmen
Join Date: Oct 2008
Location: PA
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4 heat 2 cool thermostat

If you want full control of the aux stages. Then yes you need a 4 heat and 2 cool thermostat.
Such as the Honeywell IAQ thermostat(YTH9421).

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